What is the difference between formatting and minification?

Formatting (beautifying) adds indentation, line breaks and spacing to CSS code to make it structured, readable and maintainable. Minification removes all unnecessary whitespace, line breaks and comments to reduce file size, typically used in production to speed up page loading.

Why is minified CSS smaller but functionally identical?

CSS minification only removes characters that don't affect functionality: whitespace, line breaks, comments, extra spaces. Browsers don't need these characters to parse CSS, so minified CSS works exactly the same as the original code, but file size can be reduced by 30%-60%.

How to choose the indent size?

2 spaces is the most common CSS indentation style, suitable for most team projects. 4 spaces makes indentation more visible, suitable for beginners. Tab indentation allows each developer to customize the display width. It's recommended to unify indentation style within a team.

Is my CSS code safe? Will it be uploaded?

Completely safe. All CSS processing is done locally in your browser — code is never uploaded to any server. You can use this tool offline and functionality is unaffected. We respect your code privacy.

CSS Formatter

CSS Code Formatting & Minification

Indent Size: Preserve Comments

Input CSSChars: 0

Output

CSS Formatter & Minifier Guide

Key Features

CSS Formatting - Auto-beautify CSS code with indentation and line breaks
CSS Minification - Remove excess whitespace, comments, reduce file size
Custom Indent - Support 2 spaces, 4 spaces, and Tab indentation
Comment Control - Option to preserve or remove comments during formatting

Use Cases

Development: format CSS for better readability
Production: minify CSS to reduce file size and speed up page loads
Code review: format others' code for easier reading and review
Learning: study formatted/minified CSS source code

CSS Formatter

CSS Formatter & Minifier Guide

Key Features

Use Cases

常见问题

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